CN111855117A

CN111855117A - Three-dimensional vector vibration clamp

Info

Publication number: CN111855117A
Application number: CN202010706148.2A
Authority: CN
Inventors: 卫一多; 朱军; 牒勇; 陈鹏; 杨颋; 闫麦奎; 郭怡潇; 刘枭; 代志平; 宫璇; 崔宁; 马丽; 袁晓波; 何晶; 马成祥
Original assignee: China National Petroleum Corp; China Petroleum Logging Co Ltd
Current assignee: China National Petroleum Corp; China Petroleum Logging Co Ltd
Priority date: 2020-07-21
Filing date: 2020-07-21
Publication date: 2020-10-30

Abstract

The invention discloses a three-dimensional vector vibration clamp.A connecting base of a moving coil of a vibration table is connected with a base of the vector vibration clamp, a tested vibration sample is clamped and fixed on a thrust secondary decomposition inclined plane of the vibration table, and a thrust primary decomposition inclined angle and a thrust secondary decomposition inclined angle of the vibration table carry out secondary inclined plane decomposition on thrust transmitted by the connecting base of the moving coil of the vibration table. The thrust primary decomposition inclination angle and the thrust secondary decomposition inclination angle of the vibration table are acute angles, and the value range is between 5 degrees and 85 degrees. The invention solves the problem that the three-dimensional vibration test is carried out on the one-dimensional vibration table frame through one-time clamping, and the problems of the vibration clamp that the key direction of the vibration test and the material selection basis are designed in advance are solved. The vibration clamp provides a feasible engineering scheme for developing the test potential and the expansion of the vibration dimension of the existing vibration table.

Description

Three-dimensional vector vibration clamp

Technical Field

The invention belongs to a matched test fixture of logging-while-drilling equipment in oil drilling. In particular to a three-dimensional vector vibration clamp.

Background

The vibration clamp is arranged at the connecting part of the vibration table and the tested workpiece, the performance of the vibration clamp is good or bad, and the authenticity and the effectiveness of the vibration test and the performance of the vibration table frame are directly related to the full play.

The existing design of the vibration clamp mainly considers the factors of the rigidity, the mass and the like of the vibration clamp. The performance of the existing vibration equipment is brought into full play, and research and design are carried out on the vibration test directivity; the existing vibration clamp mainly plays a role in transmitting the exciting force of a vibration table and fixing a tested part, and the dimension of the clamp in the vibration test is completely dependent on the dimension of vibration equipment. And the actual operating mode with actually being tested the sample mostly is the three-dimensional vibration in space, and actual vibration anchor clamps also can only carry out one-dimensional vibration test or through the many times clamping of different stations, realize multidimension vibration test. The under test and the over test of the vibration test have larger difference with the actual vibration working condition, and the actual vibration working condition of the tested sample piece can not be reflected more truly.

Disclosure of Invention

The invention aims to carry out three-dimensional vibration test on a one-dimensional vibration table frame through one-time clamping, and can predesign the key direction of the vibration test according to the working condition and the statistical data of engineering practice, thereby providing guidance for the improvement and optimization of the subsequent vibration structure.

The technical scheme of the invention is as follows:

The utility model provides a three-dimensional vector vibration anchor clamps, shaking table movable coil connect the base and be connected with vector vibration anchor clamps base, and the vibration sample piece of being tested is fixed on shaking table thrust secondary decomposes the inclined plane by the clamping, and the inclined plane of shaking table thrust primary decomposition inclination and shaking table thrust secondary decomposition inclination carry out twice inclined plane and decompose the thrust of shaking table movable coil connection base transmission.

The thrust primary decomposition inclination angle and the thrust secondary decomposition inclination angle of the vibration table are acute angles, and the value range is between 5 degrees and 85 degrees.

A thrust decomposition method for a vector vibration clamp vibration table. The method comprises the following steps: the method continuously applies the force component method of the inclined plane to realize the resolution of the thrust of the vibration table and the orthogonal resolution of the forces in three directions. According to different inclined angles of the plane, the magnitude and the direction of the force in different directions are controlled.

The invention solves the problem that the three-dimensional vibration test is carried out on the one-dimensional vibration table frame through one-time clamping, and the problems of the vibration clamp that the key direction of the vibration test and the material selection basis are designed in advance are solved. The vibration clamp aims to solve the problem of a feasible engineering scheme of the vibration clamp in the aspects of exerting the testing potential and the expansion of the vibration dimension of the existing vibration table.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Detailed Description

As shown in fig. 1, the whole vibration fixture adopts an aluminum alloy welding structure, so that the weight of the fixture is reduced, and meanwhile, in order to reduce the weight, a lightening hole 8 is designed, the power of the vibration rack is fully exerted, and the capability of pushing a test sample piece is improved; the whole fixture adopts a box frame type welding structure, so that the fixture is high in rigidity, convenient to manufacture and good in manufacturability. Firstly, the clamp is fixed on a vibrating table moving coil connecting base 1 through a connecting bolt 5, and the locking nut 3 and the fastening nut 4 are installed in an opposite mode, so that nut looseness during vibration testing is prevented. And then the sample piece to be tested is fixed on the thrust secondary decomposition inclined plane 9 of the vibration table through a test sample piece fastening bolt 6 and a test sample piece fastening nut 7. The inclined plane 9 can be decomposed by the second time of the vibration table, and the vibration thrust force is decomposed by the first time of the vibration table thrust force of the inclined plane 9 and the second time of the vibration table thrust force by the component force function of the

inclined plane

10 and 11. The magnitude of the thrust in each direction can be designed and adjusted in advance according to the adjustment of the primary thrust resolution inclination angle 10 and the secondary thrust resolution inclination angle 11 of the vibration table. The vibration thrust in one direction is decomposed into three orthogonal vibration thrusts. The three-dimensional decomposition of the vibration thrust is realized through the vector vibration clamp.

Firstly, selecting a proper clamp according to the shape and the vibration working condition of a sample to be tested. Mainly determining a thrust primary decomposition inclination angle 10 and a thrust secondary decomposition inclination angle 11 of the vibration table. The two angles determine the resolution direction and magnitude of the vibration thrust of the sample piece to be tested. Firstly, fixing a vibration clamp on a vibrating table moving coil connecting base 1 through a connecting bolt 5, fastening the vibration clamp with a locking nut 3 and a fastening nut 4, and sequentially fastening the fastening nut 4 and the locking nut 3 by a torque wrench. And then fixing the sample piece to be subjected to the vibration test on the thrust secondary decomposition inclined plane 9 of the vibration table through the test sample piece fastening bolt 6 and the test sample piece fastening nut 7. And after all parts are completely fastened, starting the vibration test bench to perform vibration test, and extracting vibration response signals according to the vibration sensors in all directions.

Claims

1. The three-dimensional vector vibration clamp is characterized in that a vibrating table moving coil connecting base (1) is connected with a vector vibration clamp base (2), a tested vibration sample is clamped and fixed on a vibrating table thrust secondary decomposition inclined plane (9), and a vibrating table thrust primary decomposition inclined angle (10) and a vibrating table thrust secondary decomposition inclined angle (11) carry out inclined plane decomposition twice on thrust transmitted by the vibrating table moving coil connecting base (1).

2. The three-dimensional vector vibration clamp according to claim 1, wherein the thrust primary decomposition inclination angle (10) and the thrust secondary decomposition inclination angle (11) of the vibration table are acute angles, and the value range is between 5 degrees and 85 degrees.